W510 built-in mic not recognized - win 7

Hi! I have a W510 lenovo 43192NU which now has a non working internal mic. The mic was working fine until one day it stopped being recognized by the device manager (probably after some unnoticed update ).

So I updated the driver to the latest Coexant 20585 SmartAudio HD version 4.95.43.52. and nothing. I've checked the BIOS and the mic is listed as enabled but when loggin in windows does not recognize the device. Speakers work ok. I've unistalled the driver, and tried older driver versions, let windows look for generic drivers, and nothing, still not being recognized. I really do not know what else to try, i've seen similar posts but no one seems to be able to provide any solutions.

Hopefully someone can give me a hand on what else to look at or point me to update or specific old driver that might work. It's really frustrating to believe & trust that updating drivers might upgrade the user experience only to find out most updates mess up things, + it's incredible that there is no old drivers listing to access to!

Re: W510 built-in mic not recognized - win 7

Hey....took me a while to get back to this response....Thanks for replying! ....i was not able to make it work with those 2 fixes.....how did you came about installing it?? I first installed the bios....rebooted...and installed the audio drivers....but still nothing...Laptop wont recognized the recording device!!.....what should i do? where should i check? am i mising something??